EP0806769A3 - Motor for use in information recording device - Google Patents

Motor for use in information recording device Download PDF

Info

Publication number
EP0806769A3
EP0806769A3 EP97106768A EP97106768A EP0806769A3 EP 0806769 A3 EP0806769 A3 EP 0806769A3 EP 97106768 A EP97106768 A EP 97106768A EP 97106768 A EP97106768 A EP 97106768A EP 0806769 A3 EP0806769 A3 EP 0806769A3
Authority
EP
European Patent Office
Prior art keywords
stepping motor
recording device
motor
information recording
disk
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP97106768A
Other languages
German (de)
French (fr)
Other versions
EP0806769B1 (en
EP0806769A2 (en
Inventor
Yuzuru Suzuki
Sakae Fujitani
Yoshiyuki Aono
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Minebea Co Ltd
Original Assignee
Minebea Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Minebea Co Ltd filed Critical Minebea Co Ltd
Publication of EP0806769A2 publication Critical patent/EP0806769A2/en
Publication of EP0806769A3 publication Critical patent/EP0806769A3/en
Application granted granted Critical
Publication of EP0806769B1 publication Critical patent/EP0806769B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K37/00—Motors with rotor rotating step by step and without interrupter or commutator driven by the rotor, e.g. stepping motors
    • H02K37/22—Damping units
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/20—Driving; Starting; Stopping; Control thereof
    • G11B19/2009—Turntables, hubs and motors for disk drives; Mounting of motors in the drive

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Stepping Motors (AREA)
  • Rotational Drive Of Disk (AREA)

Abstract

An information recording device is provided, whereby an inexpensive stepping motor is used to drive a recording disk for recording information, the disk being driven under open-loop control by means of inexpensive digital circuit technology, without employing rotor position detectors or a speed detector, and the rotational accuracy of the recording disk is raised to a level suitable for application, without increasing cost, by constituting the aforementioned step operation (having poor rotational accuracy) inherent in the stepping motor such that certain relationships are formed between the structural parameters of the information recording device and the structural parameters of the motor. In a stepping motor, electrical energy is supplied by switching excitation at a timing synchronized to an input clock, regardless of the load. When this electrical energy is converted to mechanical energy, the moment of inertia of the rotating portion is exploited to a maximum in order to produce smooth rotation.
EP97106768A 1996-05-09 1997-04-24 Motor for use in information recording device Expired - Lifetime EP0806769B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP11404496 1996-05-09
JP8114044A JPH09308216A (en) 1996-05-09 1996-05-09 Motor for recording information
JP114044/96 1996-05-09

Publications (3)

Publication Number Publication Date
EP0806769A2 EP0806769A2 (en) 1997-11-12
EP0806769A3 true EP0806769A3 (en) 1998-12-09
EP0806769B1 EP0806769B1 (en) 2002-08-28

Family

ID=14627633

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106768A Expired - Lifetime EP0806769B1 (en) 1996-05-09 1997-04-24 Motor for use in information recording device

Country Status (5)

Country Link
US (1) US5880569A (en)
EP (1) EP0806769B1 (en)
JP (1) JPH09308216A (en)
CN (1) CN1166718A (en)
DE (1) DE69714905T2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6959839B2 (en) * 2003-02-10 2005-11-01 Donna Roth Flavoring component holding dispenser for use with consumable beverages
US7477469B2 (en) 2006-04-27 2009-01-13 Seagate Technology Llc Active protection system
WO2011054038A1 (en) 2009-11-03 2011-05-12 Resmed Ltd Cpap systems
US10902871B2 (en) * 2018-07-19 2021-01-26 Western Digital Technologies, Inc. Low-profile ball screw cam elevator mechanism for cold storage data storage device

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63213456A (en) * 1987-02-27 1988-09-06 Tokyo Electric Co Ltd media drive device
JPH01176367A (en) * 1987-12-29 1989-07-12 Tokyo Electric Co Ltd Floppy disk drive device
JPH01220261A (en) * 1988-02-29 1989-09-01 Tokyo Electric Co Ltd floppy disk drive

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4115726A (en) * 1977-01-04 1978-09-19 Hewlett-Packard Company Open-loop electric drive with corrective controller
US5048005A (en) * 1989-10-10 1991-09-10 Ekhoff Donald L Spindle clamp having a unitary lock member
JPH04308499A (en) * 1991-04-05 1992-10-30 Matsushita Electric Ind Co Ltd How to drive a 3-phase stepping motor
DE69232492T2 (en) * 1991-12-07 2002-11-28 Minebea K.K., Nagano Motor for starting a plate
JP3427410B2 (en) * 1993-02-24 2003-07-14 ソニー株式会社 Optical disk recording device and optical disk reproducing device
JP3013288B2 (en) * 1995-08-31 2000-02-28 ミネベア株式会社 Stepping motor

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63213456A (en) * 1987-02-27 1988-09-06 Tokyo Electric Co Ltd media drive device
JPH01176367A (en) * 1987-12-29 1989-07-12 Tokyo Electric Co Ltd Floppy disk drive device
JPH01220261A (en) * 1988-02-29 1989-09-01 Tokyo Electric Co Ltd floppy disk drive

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 002 (E - 700) 6 January 1989 (1989-01-06) *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 454 (P - 944) 13 October 1989 (1989-10-13) *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 537 (P - 968) 30 November 1989 (1989-11-30) *

Also Published As

Publication number Publication date
US5880569A (en) 1999-03-09
CN1166718A (en) 1997-12-03
DE69714905T2 (en) 2003-04-30
JPH09308216A (en) 1997-11-28
EP0806769B1 (en) 2002-08-28
DE69714905D1 (en) 2002-10-02
EP0806769A2 (en) 1997-11-12

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